<!doctype html>
<html lang="zh-CN">
	<head>
		<!-- 必须的 meta 标签 -->
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, initial-scale=1">

		<!-- Bootstrap 的 CSS 文件 -->
		<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet"
			integrity="sha384-rTTiRUKnSWaDu2FjhzWFl8/JuUZMlplyWE/djenb2LoKqkgLGfEGfSrL7XDLoB1M" crossorigin="anonymous">

		<title>Hello, world!</title>
	</head>
	<body>
		<h1>Hello, world!</h1>

		<!-- JavaScript 文件是可选的。从以下两种建议中选择一个即可！ -->

		<!-- 选项 1：包含 Popper 的 Bootstrap 集成包 -->
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		<!-- 选项 2：Popper 和 Bootstrap 的 JS 插件各自独立 -->
		<!--
    <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.2/dist/umd/popper.min.js" integrity="sha384-q9CRHqZndzlxGLOj+xrdLDJa9ittGte1NksRmgJKeCV9DrM7Kz868XYqsKWPpAmn" crossorigin="anonymous"></script>
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